Ventilator



Dec. 3, 1935. A. NOVALANSKY VENTILATOR Filed Nov. 10, 1954 lqverrtor A. Noralzuysky Patented Dec. 3, 1935 UNITED STATES VENTILATOR Abraham N ovalansky, Winnipeg, Manitoba, Canada Application November 10, 1934, Serial No. 752,505

6 Claims.

The invention relates to improvements in ventilators and more especially to that type of ventilator used on railroad passenger cars and an object of the invention is to provide a ventilator which will permit the free passage of outside air into the railroad car, reject all dirt and cinders and also provide means therein for eliminating such rejected material therefrom.

A further object of the invention is to construct the device to permit of the quick removal of the interior parts for inspection or replacement.

A further object of the invention is to apply an attaching plate around the ventilator opening of the car in a dust proof joint and which will be adapted to releasably receive and hold the complete ventilator in position while in use, and for subsequent quick removal for repairs.

A further object of the invention is to provide the device with a screen and a series of baflle plates to protect the said screen against breakage from cinders or other impinging material.

A further object of the invention is toconstruct the device with a screen unit, the said unit being provided with a removable frame for quick replacement of the netting.

A still further object of the invention is tov provide guides on the interior of the ventilator to receive and hold the screen unit in'a leak proof engagement with the walls of the air passage.

A still further object of the invention is to provide means on the ventilator to permit the intake of air While preventing the nesting of birds or collection of rubbish therein.

With the above important objects in view which will become more apparent as the description proceeds, the invention consists essentially, in the arrangement and construction of parts hereinafter, more particularly described, reference being had to the accompanying drawing in which:

Fig. 1 is a vertical cross sectional view taken through the upper part of a railroad passenger car at the ventilator opening and showing the invention attached thereto.

Fig. 2 is a horizontal sectional view taken at 2-2, Fig. 1.

Fig. 3 is a partial vertical section taken at 3-3, Fig. 1.

Fig. 4 is a perspective view showing the method of fastening the netting to the frame of the screen unit.

In the drawing like characters of reference indicate corresponding parts in the several figures.

The upper part of a railroad passenger car is indicated at l and comprises the main roof or upper deck 2, the lower deck 3 and between them, the elevation or ventilator partition 4. Suitable openings 5 are provided along this partition for ventilation purposes and the air intake to the interior of the car is controlled by a horizontally pivoted gate 6 provided in each opening.

Around the outer edge of each of the ventilator openings, 1 provide a supporting plate I which is fastened to the partition by a circum- 5 scribing line of screw nails 8. An opening is provided in the plate corresponding to the openings in the partition. The edges of this latter opening are bent back on themselves to form upper and lower guides 9 and I0 and vertical 10 looks II and I2.

A rectangular shaped ventilator is indicated at l3 having a closed wall on three sides and an opening l4 located centrally on the fourth side, corresponding to the opening 5 but of less height than the ventilator. The top and bottom of the ventilator is provided with openings I5 and IS the full length thereof but of less width, narrow plates I! and I8 being provided on one side which taper to the edges of the openings l4 and are then bent outward in a U shape, as at US and 20, to correspond and be received by the guides 9 and ID of the plate 1. One of the vertical edges of the opening [4 is bent outward in a similar U shape as at 2| to be received by the vertical look I I while the other side is bent outward as at 22 to be received by the lock l2 and a screw nail 23 passes therethrough to retain the ventilator in position.

Louvers 24 are fastened across the bottom opening 16 and further removable louvers 25 having a frame 26 are provided for the upper opening l5, the frame being secured by a clip 21 on the side of the ventilator.

U shaped guides 28 and 29 are fastened on the inner opposite walls of the ventilators and slope from the upper part of the plate I1 to the bottom edge of the opening l4. These guides slidably receive a screen unit 36 comprising a relatively thin frame 3|, the full height of the guides, and supporting a wire mesh netting 32 which is secured thereto by being bent over the edge of the frame and retained there by the guides.

A pair of angle strips 33 and 34 are fastened 4 on either side of the interior of the ventilator, between the screen unit and the louvers 25, to provide guides for a series of horizontal angle shaped baflle plates 35 located one above the other, spaced apart and carried by vertical side bars 36 and 31. These bafiie plates extend approximately the height of the ventilator and a pair of fingers 38, extending from the last plate of the louvers 25, project under the upper bafiie plate for a support. A narrow door 39 is hinged to the upper part of the plate H and the other side is locked by a catch 40 on the louvers 25 to close the opening above the baffle plates and hold the screen unit tightly in place.

When in use, the air passes into the ventilator oo between the louvers, then between the baffle plates, through the netting of the screen unit, the opening 5 and into the car. Any cinders or heavy material are first acted on by gravity for removal through the lower louver, but if any are carried toward the netting by the air currents, they must pass between the bafile plates which direct them downward to be caught by the sloping plate l8 and directed back to the 1011- ver 24, thus avoiding damage to the netting.

The construction of this Ventilator insures entrance of clean air into the car while also providing easy access for complete inspection of the ventilator from the roof of the car. By releasing the catch 40 and opening the door 39, the screen unit can be withdrawn, examined and reinserted. The baiile plates can be removed in the same manner as also the frame 26 by releasing the catch 21. Should the ventilator become damaged and need replacing, the screw nail 23 is removed and the ventilator slid along the guides 9 and ID for removal. Another ventilator can be replaced in the reverse manner.

The ventilators at present in use on railroad passenger cars are constructed with the plate I as part of the casing. As the height of the casing prevents the use of a screw driver, the top and bottom edges are left loose and the plate is simply fastened at the ends. Accordingly, the upper and lower edges have a tendency to curve outward permitting dust and dirt to enter the car. With the ventilator and plate detachable however, a complete circumscribing row of screws can be used to secure the plate to the ventilator partition prior to the subsequent attachment of the ventilator, thus making a dust proof connection.

Further, the screens employed in the present used ventilators are securely fastened to a frame and soldered into place. The soldering is only done in places so that in time the frame warps and dirt and cinders are permitted to escape past. The ventilators can only be inspected from the interior of the car and cannot be removed without breakage resulting in the discard of the complete unit. With this construction, the unit can be removed intact from the exterior of the car and if the netting needs replacing, the frame can be re-used to receive a new piece of netting and inserted back into the ventilator in a minimum of time. By making the screen guides the full height of the opening and locking the door 39 in place, a tight connection is maintained all around the screen frame preventing any leakage of dirt or cinders into the car.

What I claim as my invention is:

1. A ventilator, comprising a U-shaped casing having spacer plates across the open corners thereof, the opposing open ends protected by louvers and forming the air inlet thereto and the open side forming the air outlet therefrom, a screen partition separating the interior of the ventilator from the mouth of the outlet and a series of bafile plates positioned across the interio'r side of the screen to protect the same against damage by impinging material.

2. A ventilator, comprising a U-shaped casing having spacer plates across the open corners thereof, the opposing open ends protected by louvers and forming the air inlet thereto and the open side forming the air outlet therefrom, a screen partition separating the interior of the ventilator from the mouth of the outlet and a series of baffle plates positioned across the interior side of the screen to protect the same against damage by impinging material, one of the louvers, the bafile plates and the screen formed as removable units for inspection or repair purposes.

3. In a ventilator having U-shaped guides on opposing interior walls, a screen unit receivable within the guides, said unit presenting a narrow frame having a screen netting draped thereover and held thereto by contact with the guides.

4. In a ventilator system for attachment to a rectangularly apertured wall, a rectangular centrally apertured mounting plate fixedly attached to said wall and surrounding said aperture in said wall, a ventilator unit having an apertured rectangular mounting face with three edges formed as sliding guides, said plate being provided on three edges with sliding guide-ways adapted to respectively slidably engage said guides on said unit, and removable locking means for retaining said unit in a fixed position in said guide-ways.

5. In a ventilator system for attachment to a rectangularly apertured wall, a rectangular centrally apertured mounting plate fixedly attached to said wall and surrounding said aperture in said wall, a ventilator unit having an apertured rectangular mounting face with three edges formed as sliding guides, said plate being provided on three edges with sliding guide-ways adapted to respectively slidably engage said guides on said unit, removable locking means for retaining said unit in a fixed position in said guide-ways, said ventilator unit comprising a set of bafile plates and a screen member positioned in said ventilator unit transversely between said set of baiile plates and said mounting face, said ventilator unit being inwardly provided with guideways, and said screen member being provided with guides adapted to slidably engage said last mentioned guuide-ways, whereby said screen member may be removed from said guide-ways.

6. In a ventilator system for attachment to a rectangularly apertured wall, a rectangular centrally apertured mounting plate fixedly attached to said wall and surrounding said aperture in said wall, a ventilator unit having an apertured rectangular mounting face with three edges formed as sliding guides, said plate being provided on three edges with sliding guide-Ways adapted to respectively slidably engage said guides on said unit, removable locking means for retaining said unit in a fixed position in said guide-ways, said ventilator unit comprising a set of baflle plates and a screen member positioned in said ventilator unit transversely between said set of bafile plates and said mounting face, said ventilator unit being inwardly provided with guide-ways, said screen member being provided with guides adapted to slidably engage said last mentioned guide-ways, whereby said screen member may be removed from said guide-Ways, and said ventilator unit being provided With means for removably mounting said set of baflle plates.

ABRAHAM NOVALANSKY. 

